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13 July, 17:26

How do you figure out moles?

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  1. 13 July, 17:33
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    1. mass = moles x molar mass

    Write the equation: m (in grams) = n x M.

    Extract the data from the question: n = 0.25 mol.

    Calculate the molar mass of the substance using the periodic table: M (H2O) = (2 x 1.008) + 16.00 = 18.016 g mol-1

    Substitute the values into the equation and solve: mass = 0.25 x 18.016 = 4.504 g.
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